Press for embossing metal



Nov. 3, 1925- I A. B. UNDERWOOD PRESS FOR EMBOSSING METAL Fil ad Oct. 1, 1925 2 Sheets- Sheet 1 gmwmloz ALBERT B. UNLERWOOD.

NOV- 3, I s

A. B. UNDERWOOD PRESS FOR EHBOSSING METAL Filed Oct. 1 1923 2 Sheets-Sheet 2 ALBERT B Uumzwoo Patented Nov. 3, 1925.

7 UNITED STATES;

ALBERT B. UNDER/WOOD, 0F CINCINNATI, OHIO, ASSIGNOR TO THE EDNARDSMANU FACTURING COMPANY OF CINCINNATI, OHIO, A'CORZPO'RATION OF OHIO. j

PRESS FOR EMBOSSING METAL.

Application filed October 1, 1923. serial no. 665,813.

To all whom it may concern: 1

aAmerica, and a resident of Cincinnati, in

the county .of Hamilton and State of Ohio,

have invented a new and useful Improvement in :a Press for Embossing Metal, of which the following is a specification.

This invention relates to metal working presses, especially to the type used in making embossed metal-strips. An object of my invention is to provide a device of this kind wherein embossed or :beaded metal strips may be formed without waste of metal.

Another object is to provide a device of this kind that will require little skill to operate after the machine has been set up. A

Another object is to provide such a. device that is simple, efficient and uniform in operation. Y r

These and other objects are attained by the means described herein and disclosed in -"the accompanying drawings, in which:

Fig. 1 is a side elevational view of a device of the invention, parts being. shown in cross-section.

Fig. 2 is an elevational view on line 2-2 of Fig. 1.

Fig. 3 is an elevational view on line 3-3 of Fig. 1.

Fig. 4 is a fragmental detail of a feature of the invention, part being shown in cross- Fig. 6 is a side elevational view of a stripshown in Fig. 5 after being formed by a device of my invention.

Fig. 7 is a side elevational forming die used in the device.

Fig. 8 is a cross sectional view on 8-8 of Fig. 7.

Fig. 9 is a side elevational View, of a.

line View showing a modification of the feed mechanism forma one of the holes- 37 and thuslifting two ads jacent dies out of the groove. The male,

13, which are provided with suitable bears ing bores in which upper and lower arbors 1 1 and 15 are revolubly mounted. *Inter-.

I meshing gears 16 are mounted on thearbors.

and one of the gears is actuated by pinion Be it known that I, ALBERT B UNnnn-g WOOD, a citizen of the United States of 17mounted on drive shaft 18, whichis revolubly mounted upon upright 19 and standard 12. loose pulley 20 is freely ro tatable upon drive shaft 18and'has an in- Y i gears 16 and pinion 17. A. bracket 24,

mounted on the standard 13, carries a grooved, guide 25 of a feed mechanism. Longitudinal grooves26 extend along the upper face of the guide 25.

Mounted on the endsof the arbors ltand 15 are die rollers 27. In the preferred em-.

bodiment of my invention the rollers 27 are mounted in pairs upon sleeves 27- which are keyed to the arbors.- The extreme side of each roller 27 carries a flange 34. Each roller 27 has a peripheral groove 28, and the shoulders 40 adjacent the groove are developed into a series of flats 29, which form the dies engage in the grooves 28. The

flanged side of each of the. rollers is provided with threaded holes 35 communicat- PATENT-OFFICE;

'80 seats upon. which the shoulders 39 of the dies 30 and 31 may'engage. The lugs 38 of ing with the groove 28 to accommodate 1' screws which engage upon the lugs 38 of the dies thus securing the dies. in position" upon the rollers. The shoulders 39 of the dies rest upon the flats 29 of the shouldered portion 40 of the rollers. A series of holes 37 areprovidedin staggered relation to the holes 35, one of such holes 37. communicating with the groove 28 at thebottom therep of in radialalignmen'twiththe junction ofeachtwo flats'29 on the shoulder 40. The

groove 28 byinsertin'g some small instrument such as a screw drlver or the llke 1n .dies' may readily. be removed from. the v dies 30 and female dies'31 are preferably made, in two parts, secured together by screws as shown in/Fig. 8. This is especomplementary thereto, the pairs of rollers being brought into alignment so that the groups of dies will register. r 4

In bringing the rollers 27 into alignment the elongated slots 33 permit slight adjust ment. The cams-4'1 are then positioned sothat the cam rod 47 will actuate the feed block 51 and fingers 52 toward the rollers 27, by means of the lever 49, and link 50 just as the first dies of a group are about to engage. The abrupt nose 44 on the cam 41 imparts a more rapid motion to the feed block and fingers and a strip of metal dropped into oneof the grooves 26 will be pushed into engagement with the stop 56 just as the first pair of forming dies and 31 engage the metal. The strips are then drawn between the rollers by the dies and are discharged at the opposite side. There being four groups of dies on each pair of rollers 27, and the feed block being actuated toward the rollers twice during each revolution, a strip of metal may be dropped into each of the grooves 26 and carried to the rollers 27 twice during one revolution of the rollers.

The guard 57 serves to protect the workman. The strips of metal to be formed need only be dropped into the grooves 26 and the feed block 51 and fingers 52 push them forward into position between the rollers. As

previously explained the feed block and fin gers increase their rate of travel just as the dies are about to engage upon the strip of metal, this being accomplished by means of the abrupt nose 44 on the cam 41. This action serves to bring the strip of metal against the stop 56.

The operation of cam rod 47, lever 49 and link 50 in producing the reciprocating motion 'of feed block need no further explanation. The compression spring 54 serves to cushion the return of feed block 51.

The modified feed mechanism operates in substantially the same manner as described, the differences being that the stop 56 on the rollers 27 may be eliminated, and as pre-' viously explained the strips of 'metal are clam aed between the fingers and spring plungers, carried forward and then released as the dies on the rollers engage the strip. Suitable holding springs 69 are provided upon the lower side of guard 57 to hold the strips fiat upon the bottom of grooves 26. The various elongated slots for adjusting the rollers 27, the cams 41 and fingers 52 provide very accurate adjustments, whereby the metal strips may be out to exact dimensions, run thru the machine and come out a finished product which requires no trimming. I

When long strips are required it is necessary only to eliminate stop 56 and insert dies completely around the circumference of the'rollers. The feed block 515 may also be disconnected forthis operation.

What I claim is: '1. In a device of the class described the combination with rotatable rollers, co oper ating dies mounted on the peripheries of the rollers, cams on the side'of one of therollers,

a grooved guide mounted with its one end adjacent the rollers, a feedblock mounted for reciprocation on the guide, fingers 011 the block and extending into'the grooves in the guide and means comprising a spring, a cam rod, a lever and a link for reciprocating the feed block as the rollers are rotated. 2. In a mounting for dies the combination with a roller having a peripheral groove, shoulders adjacentrthe sides of the groove, said shoulders'being developed into a series of flats, the sides of the roller having a series of threaded perforations extending through the shoulders and communicating with the groove, and having a second series of perforations spaced in staggered relation to thefirst mentioned perforations and communicating with the groove adjacent the bottom thereof, dies having lugs for engaging in the grooves in the roll, shoulders on the dies for seating on the flats on the rollers and screws in the threaded perforations for securing the lugs in the groove.

3. In a device of the classdescribed the combination with a pair of rollers, of cooperating dies mounted on the peripheries of the rollers, a cam on one of the rollers, a

guide, a feed block reciprocally carried by the guide, fingers onthe feed block, a rider carried by the feed block, depending lugs on the rider adapted to engage the fingers, and means associated with the feed block and actuated by the cam on the roller for reciprocating the feed block and for lifting the lugs from the fingers at the opposite limits of reciprocation of the feed block;

4. In a device of the class described the combination with a pair of rollers, of complementary co-operating dies mounted. on

the rollers, a guide for receiving strips ofv materials to be operated upon by the dies, at

a shouldered finger carried by the fee dblock material in the guide, a gravity actuated rider mounted on the feed block and adapted to clamp a strip of material upon the finger, and means for raising the rider at the opposite limits of reciprocation of the feed block.

5. In a device of the class described the combination with rotatable co-operating dies, of a guide mounted adjacent the dies, a reciprocating feed block carried by the guide, fingers on the block and engaging the guide and means for reciprocating the feed block as the dies are rotated. f

6. In a device of the class described, the combination with a pair of rotatable coreciprocating feed block carried bythe guide, l i

operating dies, of a cam on'one ofthe. dies, a guide, a feed-:bloek reciprocally carriedwbyf the guide, fingers 0n the feed block, airiider carried by the feedblock; depending lugs 0n 'ithelrider adapted to engage the fingers,:and:

means associated with the feed b10ekand actuated by the: cam on the die fonreciprocatingi :the feed block. and for ;1ifting;.:the.lugs from the fingers atthe opposite limitsof- 1 eciproeation of'thefeedlbloeks. In testimony whereof, I have hereunto subscribed mynamethisQlst day of September,.1923.

,:ALBERT' B. UNDERVOOD. 

